hi all i just got a new full stable @ 4.2ghz @ 1.376 VCore,what i mean stable is
20 x ibt @high,50 ibt @ 196mb and prime for at least 3hours,prime is still working in the background while i was posting this.
the reason why i said this is a new full stable because i had it stable before at the same speed but with different setup and different result.
im not trying to lecture anyone here,i just want to share my experience with the new setup.
first about the thermal paste spreading,id try many technique from peas,line.dual line,X shape and credit card spreading and i find dual line was best for me,it help me lose 6-7c load temp.
i know that usually we start the OC with the default VCore mine was 1.136v
but my friend at another forum in my country said that we should undervolt when we start OC 0.2-0.5v under VCore,this methods is highly effevtive for a newly bought Processor not just an i5 because my friend was using an i7 920
my chip was a used ones i got it from a trade with my AMD X6 with my friend,so i cant undervolt them too much when i start.
i start the OC with set the multiplers to 22x imc 1,2v and 1.095v VCore,vdroop off,load vcore was 1.11v Bclk was 133.
i start increasing the Bclk 4mhz at a time,every time i raise i have to make it for at least 3 time IBT stable @ high.
i can reach around 3,45ghz with the current VCore,its funny before i have to use 1.150v VCore to be able stable at this speed.
whenever i reach an unstabillity i try to raise the imc voltage 1 step first and if it still unstable i lower it again and raise the Vcore this time 1-2 step and if it still unstable then i try to raise them both.
from 3.6 -3.8ghz i lower the increasement to 3 mhz increasement
from 3.8 -4.0ghz i lower the increasement to 2 mhz increasement
and from 4ghz and above i use 1mhz incresement and it must survive 5x IBT@ high.
when i reach my target speed and in my case was 4,2ghz then i would make sure that it was fully stable,if i had instabillity i still use the method above.
i know it take like forever,but i think its worth it
heres my screen shot
speed 4.2 ghz
VCore idle 1.36v
Temp idle 35-38c
load Max 76c
speed 4.2 ghz
VCore idle 1.47v
Temp idle 41-43c
load Max 86c
i use noctua NH D14 change both of the fan with coolermaster @2000 rpm and tuniq TX2
as u can see i was able to push down 10c and 0.03V VCore so i think this is not bad.
i know a lot of people here can get to 4.2ghz with lower voltage and temp than me.
but hey my chip was used,i dont know how the previus owner treat her,and i live in Jakarta Indonesia where the ambient room temp here can reach 35c.i dont have an AC
thx before,sorry if it take to long of your time
ps : just for info,my friend i7 reach 4ghz with only 1.141v VCore with this methodEdited by gelarman - 1/19/11 at 10:45pm